SOLUTION: The lengths of narbles are normally distributed with a mean of 3.9m and a standard deviation of 1.8m. Seventy-five percent of the narbles are less than what amount?

Question 955021: The lengths of narbles are normally distributed with a mean of 3.9m and a standard deviation of 1.8m. Seventy-five percent of the narbles are less than what amount?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The lengths of narbles are normally distributed with a mean of 3.9m and a standard deviation of 1.8m. Seventy-five percent of the narbles are less than what amount?
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invNorm(0.75) = 0.6745
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Corresponding Marble value::
x = 0.6745*1.8 + 3.9 = 5.11m
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Cheers,
Stan H.
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